Knotting mechanism for grain-binders



Model.)

B. L. BRAGKEN.

KNOTTING MECHANISM PORGRAIN BINDBRS,

No. 270,378. Patented Jan. 9.1888.

WITNESSES INVENTOR war MCw/ j/o/af/ M CM/LW UNTTED STATES PATENT @FFIQE.

EDSON L. BRAOKEN, 0F DAWSON, ILLINOIS.

KNOTTING MECHANISM FOR GRAIN-BINDERS.

SPECIFICATION forming part of Letters Patent No. 270,378, dated January9, 1883,.

(Modeh [0 all whom it may concern Be it known that I, Eosoiv L. BRAOKEN,of Dawson, Sangamon county, Illinois, have invented an Improvement inKnotting Mechanism for Grain-Binders, of which the following is aspecification.

The. invention relatesto knotting mechanism having certain parts thereofcombined and arranged as hereinafter described. I I

Figure l of drawings is a, side view of the knotter and an under sideview of the disk, and Fig.2 an end elevation of the knotter. Fig. 3shows the spindle detached and in side elevation. Fig. 4 is across-section of the spittdle on line a: 00 of Fig. 4. Fig. 5 shows amodifled forln of spindle in cross-section.

In the drawings, A represents the frame, having flanges a a on the upperpart, with holes by which it may be attached to the hinder-fraine. I

I) represents a bearingfor the knotting-shaft, and 7c is rear flanges,apertured to receive the cord-clampingslide. fisan inclined cam-flangeon the upper side of the hearing I); and U, a cam-flange above thehearing I), with a recessed cam-surface, as shown.

B represents the knotting-shat't, extended through the bearing 1) andflange U, and having a bevel-pinion, I, above the flange. This pinionrests upon a cam-disk, H, secured on flange U by a screw, s. The shaft Bconsists of two semi-cylindrical spindles, c (1, formed at their lowerends with bills 0 d, extending therefrom at right angles. At '1, on thespindle c, is a stud carrying a friction-ro1ler,tn, that travels beneaththe cam-surface of the flange U. The pinion I is secured to the upperend of the spindle d, and ashoulder, w, on the spindle d, beneath thebearing b, serves, in'connection with the pinion, to prevent endwisemovement of the spindle, While the spindle 0 is free to move endwise foropening and closing the bills 0 d. The spindle d is tightened to take upwear by the disk H, which is formed on its lower face with a beveledprojection, h, working in a recess, 72 in the upper face of flange U, sothat by turning and setting the disk any desired adjustment may beobtained.

D represents aslide, movable endwise in flanges it It, and having aright-angled arm at its upper end, and at its lower end an angular footor projection, t. The arm 0 of the slide I) lies beneath the recess 9 ofthe cam U and in the path of the roller an, while the projection t isshaped to act with a shoulder on the flange k, and a shear-blade 02,also fixed on flange k of the frame A to sever the cord and hold theend. lisa U-shaped spring, fixed on frame A, and engaging the slide 1)to holdup and raiseit after the roller in has passed the flange e.

In starting the Operation the bills stand as shown in Fig. l of thedrawings, and the cord, as shown atp, passes from the holder t, wherethe end is held over the bills 0' d, and the usual guide,0,to and aroundthe bundle, thence back over the guides and bills, and then over .theholder-t. As the shaft B revolves, the bills are retained closed by thecontact of roller m with the cam-flange U, and the cords being at theangle shown in Fig. 1, the bills pass over them and thus loop the cordsaround the bills.-

When the shaft B has made about a half-revolution the roller an, havingreached the inclined cam-projection -f, is moved up into the arm 0 theslide springs up, the hand portion of the cord is thereby carriedagainst the fixed spear and severed, and the end of the supply caught asthe old end was. When the pressure on the bundle is released the loop isdrawn from the bills by the expansion of the bundle and its removal. Theloop is drawn over the ends held by the bills and the knotis tightened.The bills hold the ends until, the knot being tight, the strain releasesthem. The bills may be roughened, if desired, to prevent the ends fromslipping of until the loop is drawn tight.

In Fig. 6 of the drawings I have shown a (yer-shaft with its principalspindle dgrooved jection f of the supporting-frame, as and forlengthwise to receive the sliding spindle c.

Having thus described all that is necessary to a full understanding ofmy invention, what I claim as new is 1. In a knotting mechanism forgrain-binders, the revolving shaft B, composed of a relatively fixedand. movable spindle carrying respectivelya fixed and a movable bill,themovable spindle having, a lug, r, in combination with the spring-pressedslide D, having catch t and flange c, the cam-disk U, and cam-prol I I Ithe purpose specified.

2. In knotting mechanism, the disk II, having cam-projection h, incombination with shaft B, having shoulder w and pinion I, and

flange U, having recess h and bearing, I), as

and for the purpose specified.

EDSON LEE BRACKEN.

Witnesses J. H. CONSTANT, JAs. W, PATTON.

